body{
  text-align: center;
}
.dx-button{
  margin: 20px;
}

.dx-theme-android5 .dx-icon-myicon
{
  background-image: url();
}

.dx-theme-ios .dx-icon-myicon
{
  background-image: url();
}

.dx-theme-win10 .dx-icon-myicon
{
  background-image: url();
}

.dx-theme-generic .dx-icon-myicon
{
  background-image: url();
}